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參數(shù)資料
| 型號(hào)： | TDA9112A |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 偏轉(zhuǎn) |
| 英文描述： | HORIZ/VERT DEFLECTION IC, PDIP32 |
| 封裝： | PLASTIC, SDIP-32 |
| 文件頁數(shù)： | 36/60頁 |
| 文件大?。?/td> | 831K |
| 代理商： | TDA9112A |
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Obsolete
Product(s)
- Obsolete
Product(s)
TDA9112A
41/60
9.4.5
Vertical moiré
To blur potential moiré patterns due to interaction
of deflection lines with CRT mask grid, the picture
position is to be slightly alternated at frame fre-
quency. For this purpose, a square waveform at
half-frame frequency is superimposed on the out-
put waveform. Its amplitude is adjustable through
VMOIRE IC-bus control.
9.4.6
Biasing of vertical booster
The biasing voltage for external DC-coupled verti-
cal power amplifier is to be derived from VRefO
voltage provided on pin RefOut, using a resistor di-
vider, this to ensure the same temperature drift of
mean (DC) levels on both differential inputs and to
compensate for spread of VRefO value (and so
mean output value) between particular devices.
Figure 12. Vertical section block diagram
Synchro
Polarity
Controller
Discharge
Sampling
Capacitance
C-correction
Charge current
Trans-conductance amplifier
VOscF
VOut
VCap
VSyn
OSC
Cap.
Q1
VEHTIn
VAGCCap
VSIZE (IC)
SCOR (IC)
CCOR (IC)
VMOIRE (IC)
VPOF (IC)
VSAG (IC)
S-correction
VVOB
Internal
V-ramp
22
20
18
23
19
2
VPOS (IC)
sawtooth
discharge
VVOTref
Vmidref
To geometry processing
VEHTG (IC)
VVEHTnull
R
VPOS (IC)
Vmidref
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相關(guān)代理商/技術(shù)參數(shù) |
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| TDA9113 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR |
| TDA9115 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR |
| TDA9116 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR |
| TDA9118 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:行/場(chǎng)掃描處理電路 |
| TDA9141 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:PAL/NTSC/SECAM decoder/sync processor |
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